2687319586313 has 4 divisors (see below), whose sum is σ = 2687970430740. Its totient is φ = 2686668741888.

The previous prime is 2687319586247. The next prime is 2687319586381. The reversal of 2687319586313 is 3136859137862.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 652497219529 + 2034822366784 = 807773^2 + 1426472^2 .

It is a cyclic number.

It is not a de Polignac number, because 2687319586313 - 2¹² = 2687319582217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2687319586613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 325416020 + ... + 325424277.

It is an arithmetic number, because the mean of its divisors is an integer number (671992607685).

Almost surely, 2^{2687319586313} is an apocalyptic number.

It is an amenable number.

2687319586313 is a deficient number, since it is larger than the sum of its proper divisors (650844427).

2687319586313 is an equidigital number, since it uses as much as digits as its factorization.

2687319586313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650844426.

The product of its digits is 39191040, while the sum is 62.

The spelling of 2687319586313 in words is "two trillion, six hundred eighty-seven billion, three hundred nineteen million, five hundred eighty-six thousand, three hundred thirteen".